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d4 · tools · cve

CVE-2026-109619.

Severity, exploit probability and exploitation status for one vulnerability, drawn from NVD, FIRST EPSS and CISA's exploited catalogue.

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known exploited PHP Stale Internal Request-State Vulnerability

Vendor / product
PHP Group - PHP
Listed by CISA
2026-10-26
Federal fix deadline
2026-10-29 (passed)
Required action
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Scores

CVSS 4.0
9.2 critical CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:
EPSS
100% estimated probability of exploitation in the next 30 days (higher than 100% of all CVEs)
Weakness class
CWE-416, CWE-755, CWE-824, CWE-1325

ATT&CK techniques

inferred from weakness class no curated mapping exists for this CVE; these are the techniques typically seen with CWE-416, CWE-755, CWE-824, CWE-1325 vulnerabilities

ReconnaissanceResource DevelopmentInitial AccessExecutionPersistencePrivilege EscalationStealthDefense ImpairmentCredential AccessDiscoveryLateral MovementCollectionCommand and ControlExfiltrationImpact

T1059 Command and Scripting Interpreter

Execution

Adversaries may abuse command and script interpreters to execute commands, scripts, or binaries.

via sub-technique T1059.007 JavaScript

Inferred from CWE-416, CWE-824.

T1059 on attack.mitre.org

T1203 Exploitation for Client Execution

Execution

Adversaries may exploit software vulnerabilities in client applications to execute code.

Inferred from CWE-416.

T1203 on attack.mitre.org

T1204 User Execution

Execution

An adversary may rely upon specific actions by a user in order to gain execution.

via sub-technique T1204.002 Malicious File

Inferred from CWE-416, CWE-824.

T1204 on attack.mitre.org

T1068 Exploitation for Privilege Escalation

Privilege Escalation

Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.

Inferred from CWE-416.

T1068 on attack.mitre.org

T1003 OS Credential Dumping

Credential Access

Adversaries may attempt to dump credentials to obtain account login and credential material, normally in the form of a hash or a clear text password.

Inferred from CWE-416.

T1003 on attack.mitre.org

T1499 Endpoint Denial of Service

Impact

Adversaries may perform Endpoint Denial of Service (DoS) attacks to degrade or block the availability of services to users.

via sub-technique T1499.003 Application Exhaustion Flood

Inferred from CWE-1325.

T1499 on attack.mitre.org

See these techniques on the full ATT&CK matrix.

Description

PHP has various global state that temporarily points into request memory. In some scenarios, global state may not be correctly reset, or may be repopulated after being reset. The global state may then refer to request memory even after it has been freed. Subsequent requests may read or branch on this stale state before it is fully initialized. Multiple strategies can trigger this condition and produce remote code execution (RCE).

Published
2026-10-21
Last modified
2026-10-27
NVD status
Analyzed

References

Covered in Decrypted

CVSS measures how bad exploitation would be; EPSS estimates how likely exploitation is within 30 days; the CISA listing means it is already happening. Read them together: a CVSS 9.8 with EPSS 0.04% is usually less urgent than a CVSS 7.2 on the exploited list. Data: NVD, FIRST EPSS, CISA KEV; detail is cached for a week, scores for a day. ATT&CK techniques come from the CTID KEV mappings project where a curated mapping exists, otherwise they are inferred from the weakness class and labelled as such. ATT&CK is a registered trademark of The MITRE Corporation. © 2026 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation.